Table 4.
Results of hypothesis testing for the full sample and representative groups (N=238).
| Hypothesis and group | Path | t test (df) | P value | Cohen f2 | Support | |
| H1: Feedback functionality is positively related to the perceived persuasiveness of the system | ||||||
|
|
Full sample | 0.140 | 2.188 (8) | .04 | 0.023 | Yes |
|
|
Women | 0.158 | 1.931 (8) | .05 | 0.028 | Yes |
|
|
Men | 0.161 | 1.677 (8) | .13 | 0.032 | No |
|
|
Low NFCa | 0.018 | 0.162 (8) | .90 | —b | No |
|
|
Moderate NFC | 0.159 | 1.628 (8) | .36 | 0.045 | No |
| High NFC | 0.218 | 2.047 (8) | .03 | 0.049 | Yes | |
| H2: Feedback functionality is positively related to self-monitoring features | ||||||
|
|
Full sample | 0.499 | 8.200 (8) | <.001 | 0.385 | Yes |
|
|
Women | 0.503 | 5.811 (8) | <.001 | 0.421 | Yes |
|
|
Men | 0.502 | 7.057 (8) | <.001 | 0.356 | Yes |
|
|
Low NFC | 0.662 | 8.735 (8) | <.001 | 0.844 | Yes |
|
|
Moderate NFC | 0.447 | 3.669 (8) | <.001 | 0.277 | Yes |
|
|
High NFC | 0.414 | 4.494 (8) | <.001 | 0.283 | Yes |
| H3: Self-monitoring is positively related to the user’s perceived persuasiveness evaluation | ||||||
|
|
Full sample | 0.348 | 4.494 (8) | <.001 | 0.125 | Yes |
|
|
Women | 0.234 | 2.361 (8) | .02 | 0.054 | Yes |
|
|
Men | 0.478 | 4.325 (8) | <.001 | 0.271 | Yes |
|
|
Low NFC | 0.406 | 3.065 (8) | .003 | 0.146 | Yes |
|
|
Moderate NFC | 0.354 | 3.486 (8) | <.001 | 0.205 | Yes |
|
|
High NFC | 0.400 | 2.631 (8) | .01 | 0.127 | Yes |
| H4: The perceived credibility of the system has a positive influence on self-monitoring features | ||||||
|
|
Full sample | 0.329 | 5.013 (8) | <.001 | 0.167 | Yes |
|
|
Women | 0.348 | 3.862 (8) | <.001 | 0.202 | Yes |
|
|
Men | 0.306 | 3.564 (8) | <.001 | 0.133 | Yes |
|
|
Low NFC | 0.212 | 2.368 (8) | .02 | 0.087 | Yes |
|
|
Moderate NFC | 0.306 | 2.363 (8) | .02 | 0.123 | Yes |
|
|
High NFC | 0.451 | 4.619 (8) | <.001 | 0.336 | Yes |
| H5: Perceived credibility has a positive relationship with perceived persuasiveness | ||||||
|
|
Full sample | 0.352 | 4.870 (8) | <.001 | 0.168 | Yes |
|
|
Women | 0.446 | 5.620 (8) | <.001 | 0.279 | Yes |
|
|
Men | 0.220 | 1.848 (8) | .07 | 0.070 | Yes |
|
|
Low NFC | 0.443 | 3.596 (8) | <.001 | 0.312 | Yes |
|
|
Moderate NFC | 0.476 | 6.023 (8) | <.001 | 0.475 | Yes |
|
|
High NFC | 0.132 | 0.921 (8) | .36 | 0.019 | No |
| H6: Perceived persuasiveness has a positive influence on self-reported level of activity after adopting a self-monitoring system | ||||||
|
|
Full sample | 0.335 | 5.484 (8) | <.001 | 0.127 | Yes |
|
|
Women | 0.260 | 3.331 (8) | .001 | 0.072 | Yes |
|
|
Men | 0.372 | 4.026 (8) | <.001 | 0.162 | Yes |
|
|
Low NFC | 0.182 | 1.420 (8) | .16 | 0.034 | No |
|
|
Moderate NFC | 0.311 | 2.745 (8) | .006 | 0.107 | Yes |
|
|
High NFC | 0.511 | 6.429 (8) | <.001 | 0.355 | Yes |
| H7: NFC moderates the relationship between feedback and perceived persuasiveness. The positive influence of feedback is stronger for individuals with high NFC because of the informative nature of feedback in self-monitoring systems | ||||||
|
|
Full sample | –0.048 | 0.851 (8) | .40 | 0.025 | No |
|
|
Women | –0.066 | 1.421 (8) | .16 | 0.052 | No |
|
|
Men | 0.027 | 0.360 (8) | .72 | 0.007 | No |
| H8: NFC moderates the relationship between self-monitoring and perceived persuasiveness | ||||||
|
|
Full sample | –0.040 | 0.822 (8) | .41 | 0.016 | No |
|
|
Women | –0.083 | 2.875 (8) | .004 | 0.074 | Yes |
|
|
Men | 0.047 | 0.634 (8) | .53 | 0.015 | No |
| H9: NFC moderates the relationship between perceived credibility and perceived persuasiveness | ||||||
|
|
Full sample | –0.090 | 1.363 (8) | .17 | 0.051 | No |
|
|
Women | –0.098 | 2.077 (8) | .04 | 0.080 | Yes |
|
|
Men | 0.126 | 0.871 (8) | .38 | 0.124 | No |
aNFC: need for cognition.
bNonsignificant values are omitted.